1024.    -------------.  [Composition of Products Obtained by the Petroleum Synthesis.]  Brennstoff-Chem., vol. 9, 1938, pp. 21-24; Ges. Abhandl. Kenntnis Kohle, vol. 9, 1930, pp. 523-533; British Chem. Abs., 1928, B, p. 324; Chem. Abs., vol. 22, 1928, p. 2657.

       Composition of gases (gasols) varied with the catalyst and conditions of the experiment.  A gas obtained with a Fe-Cu catalyst showed the following composition by condensation analysis:  C₂H₆, 42.5; C₃H₈, 19.5; C₄H₁₀, 2.0; C₂H₄, 6.0; C₃H₆, 21.0; and C₄H₈, 9.0%.  Benzine, boiling 60°-185°, recovered by adsorption in active charcoal and steaming out at 250°, contained 30% paraffins, for the most part octane, nonane, and isononane, which were positively identified.  The remaining 70% of the benzine were olefins.  There were no diolefins present.  Heavier products were examined only for unsaturation by the Wijs I method.  The degree of saturation could be varied by varying the catalysts or experimental conditions; for example, doubling the gas space velocity increased the unsaturation of the oil 3 times.  Water-soluble oxygenated products (aldehyde and acetone) amounted to 2% of total products recovered.  There was no trace of compounds of ring structure found.  All products could be converted into paraffins by hydrogenation in contact with Ni.  The mechanism of the catalytic petroleum synthesis is discussed.  In addition to the two previous assumptions of reaction mechanism, the carbide – CH₂, and the molecular complex theories, a third possibility is advanced – the primary formation of high-molecular hydrocarbons and their subsequent catalytic cracking into lower hydrocarbons.  In all 3 cases, the unsaturated hydrocarbons temporarily occur and then are subjected to a greater or less extent to hydrogenation.